A Metamodel-Based Monte Carlo Simulation Approach for Responsive Production Planning of Manufacturing Systems

Production planning is concerned with finding a release plan of jobs into the manufacturing system so that its actual outputs over time match the customer demand with the least cost. The biggest challenge of production planning lies in the difficulty to quantify the performance of a release plan, which is the necessary basis for plan optimization. Triggered by an input plan over a time horizon, the system outputs, work in process (WIP) and job departures, are non-stationary bivariate time series that interact with customer demand (another time series), resulting in the fulfillment/non-fulfillment of demand and in the holding cost of both WIP and finished-goods inventory. The relationship between a release plan and its resulting performance metrics (typically, mean/variance of the total cost and the demand fulfill rate is far from being adequately quantified in the existing literature of production planning. In this dissertation, a metamodel-based Monte Carlo simulation (MCS) method is developed to accurately capture the dynamic and stochastic behavior of a manufacturing system, and to allow for real-time evaluation of a release plan in terms of its performance metrics. This evaluation capability is embedded in a multi-objective optimization framework to enable the quick search of good (or optimum) release plans. The developed method has been applied to a scaled-down semiconductor fabrication system to demonstrate the quality of the metamodel-based MCS evaluation and the plan optimization results

Parting with Misconceptions about Learning-based Vehicle Motion Planning

The release of nuPlan marks a new era in vehicle motion planning research, offering the first large-scale real-world dataset and evaluation schemes requiring both precise short-term planning and long-horizon ego-forecasting. Existing systems struggle to simultaneously meet both requirements. Indeed, we find that these tasks are fundamentally misaligned and should be addressed independently. We further assess the current state of closed-loop planning in the field, revealing the limitations of learning-based methods in complex real-world scenarios and the value of simple rule-based priors such as centerline selection through lane graph search algorithms. More surprisingly, for the open-loop sub-task, we observe that the best results are achieved when using only this centerline as scene context (i.e., ignoring all information regarding the map and other agents). Combining these insights, we propose an extremely simple and efficient planner which outperforms an extensive set of competitors, winning the nuPlan planning challenge 2023.Comment: CoRL 202

Regional Conference Planning: A Roadmap to Success

National, state and local mandates require professional development for K-12 and community health educators to keep knowledge and skills current, to maintain certification and to enhance professional practice. Meeting these mandates at the local level presents a challenge because of limited professional development opportunities and a lack of funds for travel or release time from work. This paper describes the evolution of HealthNets, a network of health educators who utilized various modes and venues of professional development opportunities that are accessible, reflect best practices and help fulfill national, state and local mandates. Conference planning, implementation, evaluation and lessons learned are discussed

Learning at the Ends: From Hand to Tool Affordances in Humanoid Robots

One of the open challenges in designing robots that operate successfully in the unpredictable human environment is how to make them able to predict what actions they can perform on objects, and what their effects will be, i.e., the ability to perceive object affordances. Since modeling all the possible world interactions is unfeasible, learning from experience is required, posing the challenge of collecting a large amount of experiences (i.e., training data). Typically, a manipulative robot operates on external objects by using its own hands (or similar end-effectors), but in some cases the use of tools may be desirable, nevertheless, it is reasonable to assume that while a robot can collect many sensorimotor experiences using its own hands, this cannot happen for all possible human-made tools. Therefore, in this paper we investigate the developmental transition from hand to tool affordances: what sensorimotor skills that a robot has acquired with its bare hands can be employed for tool use? By employing a visual and motor imagination mechanism to represent different hand postures compactly, we propose a probabilistic model to learn hand affordances, and we show how this model can generalize to estimate the affordances of previously unseen tools, ultimately supporting planning, decision-making and tool selection tasks in humanoid robots. We present experimental results with the iCub humanoid robot, and we publicly release the collected sensorimotor data in the form of a hand posture affordances dataset.Comment: dataset available at htts://vislab.isr.tecnico.ulisboa.pt/, IEEE International Conference on Development and Learning and on Epigenetic Robotics (ICDL-EpiRob 2017

Bringing Families In: Recommendations of the Incarceration, Reentry and Family Roundtables

Building on the findings of the New Jersey Reentry Roundtable and a growing concern around the state about how to improve outcomes for the more than 70,000 individuals expected to return home from prison over the next five years, the roundtable examined the complex role that families – broadly defined – play in the lives of prisoners during incarceration and after their release. This document presents a set of recommendations emerging directly from roundtable sessions and provides a road map for individual and collaborative efforts accepted by a range of key players in New Jersey, including government officials, community and faith based service agencies, advocacy groups, family members and formerly incarcerated people

Geographies and politics of localism: the localism of the United Kingdom's Coalition Government

There has always been a localist element to British politics. But recently, a particular version of localism has been moved to the foreground by the 2011 Localism Act. This paper identifies various uses and meanings of localism, maps their geographical assumptions and effects, and critiques their politics. It does this using the localism of the United Kingdom’s Coalition Government as a case study of localism in practice. The rationalities, mentalities, programmes, and technologies of this localism are established from Ministerial speeches and press releases, along with Parliamentary Acts, Bills, White Papers, Green Papers, and Statements – all published between May 2010 when the Coalition Government was formed, and November 2011 when the Localism Act became law. We argue that localism may be conceptualised as spatial liberalism, is never straightforwardly local, and can be anti-politica

Resettlement of young people leaving custody: Lessons from the literature

This literature review aims to set out the research and practice evidence about effective resettlement services for children and young adults and can be used to inform future policy and practice to ensure service delivery is evidence based. The findings of the review will help to steer the focus of Beyond Youth Custody’s research over the duration of the programme and act as a baseline to assess how our understanding has advanced in terms of what works in facilitating the transition from youth custody to the community and beyond. In addition, the review highlights some examples of good practice, as well as the emerging key principles of effective resettlement provision

Prison Health Discharge Planning- Evidence of an integrated care pathway or the end of the road?

This article is based on research conducted in several prisons in North East England. It explores the effectiveness of prisons, and the wider criminal justice system, at meeting the healthcare needs of inmates as they leave prison, or transfer between prisons. In doing so, the article details policy context, areas of good practice and issues that still need to be addressed in relation to the creation of an integrated care pathway

Implementation of Family Planning and Contraception for Female Inmates in Vermont

Background and Objective(s): Unplanned pregnancies are disproportionately high among female inmates, and incarceration provides a unique opportunity for care may be otherwise difficult to obtain, including reproductive health and family planning services, specifically the provision of contraception. It is known that women are 14 times more likely to initiate contraception if education and services are provided within the prison (Clarke et al., 2006b). Despite decades of research identifying the unmet need, very few prisons around the country provide any sort of sexual health or family planning care to prisoners (Braithwaite, Treadwell, & Arriola, 2008). Methods: This project involves the creation of new program and implementation of a new model of care within the existing health care structure at Vermont’s sole women’s prison, Chittenden Regional Correctional Facility (CRCF). First, determination of the most appropriate model of care; second, building a curriculum based on existing evidence-based practice guidelines; and third, implementation of the program using a one-year pilot program. Quality metrics, as yet undetermined and beyond the scope of this project, will need to be monitored throughout the year by the research and quality team within the prison to measure impact of the new program. Results: Partnership with the Vermont Department of Justice, Department of Corrections, Centurion Health, and Planned Parenthood was necessary for completion of the project. A one-year pilot program begins June 2017, including group and individual education sessions and coordination with staff to expand family planning services within the existing health care clinic, as well as a referral system for care outside of the scope of the clinic. Implications: Despite decades of research demonstrating the need and female inmates desire to obtain contraception before discharge from prison, multiple barriers to accessing care still exist, making reproductive services limited in U.S. women’s prisons. The pilot program will serve as a model for other prisons, and quality measures throughout the year will be vital in demonstrating the success of the program. Extreme attention to ethics and adaptations appropriate to working with a vulnerable population of imprisoned women were central to the completion of this project